Fractions Quarters Hard — Set 6

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                "numerator1": 15,
                "denominator1": 16,
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                "denominator2": 6,
                "question": "15/16 - 1/6 = ?",
                "answer": "37/48",
                "correctAnswer": "37/48",
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                "id": 3,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 5,
                "denominator1": 7,
                "numerator2": 1,
                "denominator2": 3,
                "question": "5/7 × 1/3 = ?",
                "answer": "5/21",
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                "id": 4,
                "type": "fractions",
                "subType": "divide",
                "numerator1": 7,
                "denominator1": 10,
                "numerator2": 1,
                "denominator2": 2,
                "question": "7/10 ÷ 1/2 = ?",
                "answer": "7/5",
                "correctAnswer": "7/5",
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                "id": 5,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 5,
                "denominator1": 14,
                "numerator2": 4,
                "denominator2": 9,
                "question": "5/14 × 4/9 = ?",
                "answer": "10/63",
                "correctAnswer": "10/63",
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                "id": 6,
                "type": "fractions",
                "subType": "add",
                "numerator1": 2,
                "denominator1": 11,
                "numerator2": 1,
                "denominator2": 14,
                "question": "2/11 + 1/14 = ?",
                "answer": "39/154",
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                "id": 7,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 11,
                "denominator1": 13,
                "numerator2": 3,
                "denominator2": 9,
                "question": "11/13 × 3/9 = ?",
                "answer": "11/39",
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                "id": 8,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 11,
                "denominator1": 16,
                "numerator2": 7,
                "denominator2": 9,
                "question": "11/16 × 7/9 = ?",
                "answer": "77/144",
                "correctAnswer": "77/144",
                "difficulty": "hard"
            },
            {
                "id": 9,
                "type": "fractions",
                "subType": "add",
                "numerator1": 2,
                "denominator1": 5,
                "numerator2": 8,
                "denominator2": 16,
                "question": "2/5 + 8/16 = ?",
                "answer": "9/10",
                "correctAnswer": "9/10",
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                "id": 10,
                "type": "fractions",
                "subType": "subtract",
                "numerator1": 7,
                "denominator1": 13,
                "numerator2": 1,
                "denominator2": 16,
                "question": "7/13 - 1/16 = ?",
                "answer": "99/208",
                "correctAnswer": "99/208",
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                "type": "fractions",
                "subType": "simplify",
                "numerator1": 2,
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                "numerator2": 10,
                "denominator2": 14,
                "question": "Simplify 8/20 = ?",
                "answer": "2/5",
                "correctAnswer": "2/5",
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                "id": 12,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 3,
                "denominator1": 12,
                "numerator2": 1,
                "denominator2": 9,
                "question": "3/12 × 1/9 = ?",
                "answer": "1/36",
                "correctAnswer": "1/36",
                "difficulty": "hard"
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            {
                "id": 13,
                "type": "fractions",
                "subType": "subtract",
                "numerator1": 3,
                "denominator1": 4,
                "numerator2": 5,
                "denominator2": 13,
                "question": "3/4 - 5/13 = ?",
                "answer": "19/52",
                "correctAnswer": "19/52",
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                "id": 14,
                "type": "fractions",
                "subType": "add",
                "numerator1": 1,
                "denominator1": 11,
                "numerator2": 13,
                "denominator2": 16,
                "question": "1/11 + 13/16 = ?",
                "answer": "159/176",
                "correctAnswer": "159/176",
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                "id": 15,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 2,
                "denominator1": 8,
                "numerator2": 4,
                "denominator2": 6,
                "question": "2/8 × 4/6 = ?",
                "answer": "1/6",
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                "subType": "add",
                "numerator1": 8,
                "denominator1": 11,
                "numerator2": 6,
                "denominator2": 8,
                "question": "8/11 + 6/8 = ?",
                "answer": "65/44",
                "correctAnswer": "65/44",
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                "id": 17,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 5,
                "denominator1": 10,
                "numerator2": 8,
                "denominator2": 14,
                "question": "5/10 × 8/14 = ?",
                "answer": "2/7",
                "correctAnswer": "2/7",
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                "id": 18,
                "type": "fractions",
                "subType": "multiply",
                "numerator1": 2,
                "denominator1": 10,
                "numerator2": 5,
                "denominator2": 9,
                "question": "2/10 × 5/9 = ?",
                "answer": "1/9",
                "correctAnswer": "1/9",
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                "id": 19,
                "type": "fractions",
                "subType": "add",
                "numerator1": 1,
                "denominator1": 2,
                "numerator2": 13,
                "denominator2": 14,
                "question": "1/2 + 13/14 = ?",
                "answer": "10/7",
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                "numerator1": 11,
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                "numerator2": 5,
                "denominator2": 6,
                "question": "11/14 + 5/6 = ?",
                "answer": "34/21",
                "correctAnswer": "34/21",
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